Mill is made with crystal clear acrylic Sizes range from 3.5"-15" 2 Stage grinding mechanism is made of case-hardened steel which is specially treated to keep the teeth razor sharp and protect from corrosion Releases maximum flavor and aroma by first cracking each peppercorn before it is ground Classic grind adjustment: turn the top knob tighter (clockwise) for finer grinds; looser (counter-clockwise) for coarser grinds Made in France There are many benefits to freshly grinding pepper, salt, herbs and spices for cooking and seasoning. A quality mill with a specifically designed grinding mechanism will release the aromas and essential oils of that spice. Freshly ground pepper and spices have more aroma and better flavor than pre- ground. Another advantage of using freshly ground spices or minerals (salts) is the control a mill provides for determining the coarseness (size) of a grind. A high quality pepper, salt or spice mill gives you the ability to choose and change the coarseness according to taste or necessity.